Fastener



FIG. 1 is a top view of the invention in the non-folded, pre-use configuration.

FIG. 2 is a bottom view of the invention in the non-folded, pre-use configuration.

FIG. 3 is a front view of the invention in the non-folded, pre-use configuration, the rear view being identical.

FIG. 4 is a right side view of the invention in the non-folded, pre-use configuration, the left side view being identical.

FIG. 5 is a top view of the invention in the folded, in-use configuration.

FIG. 6 is a bottom view of the invention in the folded, in-use configuration.

FIG. 7 is a front view of the invention in the folded, in-use configuration.

FIG. 8 is a right side view of the invention in the folded, in-use configuration, the left side view being identical.

FIG. 9 is a rear view of the invention in the folded, in-use configuration; and,

FIG. 10 is a view of the invention in the folded, in-use configuration with two sheets of paper shown as environmental structure.

The broken line showing of FIG. 10 is for illustrative purposes only and forms no part of the claimed design.

The surface shading of FIGS. 1 and 6 indicates contrasting colors relative to the unshaded portions of the invention. 

The ornamental design for a fastener, as shown and described. 